Burger time won't sync..

pacman71

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I moved the monitor to another game .. wham sync works right away.. I have tried 3 monitors in this damn machine and it won't sync. Tried adjust vertical hold, it still rolls.


Any ideas?

beautiful color no sync.
 
I moved the monitor to another game .. wham sync works right away.. I have tried 3 monitors in this damn machine and it won't sync. Tried adjust vertical hold, it still rolls.


Any ideas?

beautiful color no sync.
is it the original monitor? Did it ever work? if not, put a g07 or a wells 4600 or 4900 in there and then it will sync....

if still a problem. check the wiring.
 
Some boards have a mod on them related to sync. I had the same issue with a board and realized it didnt have the mod. I copied the mod from another board and it worked fine. I didnt really look into it to see what was done.
Look at the back of your board and see if there are two jumper wires.
 
Update, its the parts side of the board. Here is a pic of the wires. If yours does have these wires make sure they are both still connected.
Is this a boardset you just got or something that was previously working with that monitor?

Here is the pinout for the mod.
Edge connector pin 4 goes to 6C 74LS74 pin 9
Edge connector pin 5 goes to 6D 74LS00 pin 8
 
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the monitor that was in it rolled a bit it was an old GO7, I just put a nice WG7xxx monitor in it rolls like crazy.

I just looked it, does have 2 little jumpers on it.

Just like your photo...I'll have to set it aside for a short time. Thanks for the obscure hit.


Thanks,

mike
 
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